1. The document discusses stem cells from umbilical cord blood and their potential uses and advantages over other stem cell sources. It notes that umbilical cord blood stem cells are easy and painless to obtain, pose no ethical issues, and have lower risks of transplant rejection.
2. Potential uses of umbilical cord blood stem cells discussed include treatment of conditions like cerebral palsy, diabetes, heart disease, and organ failure. However, the likelihood of any individual needing treatment is relatively low.
3. The document provides information on storing umbilical cord blood, the relationship between stem cell quantity and treatment effectiveness, and HLA matching in transplants. It notes cord blood stem cells have a lower risk of
This document discusses cell culture environments. It explains that the culture medium is the most important component as it provides nutrients, growth factors, hormones, and regulates pH and osmotic pressure. There are three basic types of media: basal media containing essential components; reduced-serum media with less serum; and serum-free media without serum and using growth factors instead. The document also discusses factors like pH, CO2 levels, and temperature that affect the culture environment and lists optimal levels for different cell lines.
This document discusses various methods for testing the mutagenicity of chemicals, including both prokaryotic and eukaryotic cell systems. It describes the Ames test which uses Salmonella bacteria to identify mutagens, as well as other prokaryotic methods like the host-mediated assay and coliform assay. Eukaryotic methods discussed include the Saccharomyces forward mutation assay, mammalian cell tests, and in vivo assays like the micronucleus test and dominant lethal assay. The document provides details on the procedures and principles of many of these important mutagenicity testing methods.
A wonderful and interesting presentation on Multiple Sclerosis! It includes videos, pictures and great insight into the possible cure for MS. I truly hope whoever downloads it enjoys it as much as I do. Blessings!
1. Multiple sclerosis is a disease of the central nervous system where the protective myelin sheath around the axons is damaged, leading to scarring and demyelination.
2. It commonly affects people between the ages of 20-40 and has a higher prevalence in northern European populations and temperate climates.
3. Symptoms vary widely and can include changes in sensation, vision problems, weakness, and balance issues. Diagnosis involves MRI imaging and ruling out other potential causes through blood and spinal fluid tests.
The document provides information on principles of cell culture. It discusses the history of cell culture, beginning with Roux maintaining embryonic chick cells in 1885. It describes the typical equipment used in cell culture like laminar flow cabinets and incubators. The document outlines the different types of cell cultures like primary cultures derived directly from tissue and continuous cultures that can be serially passaged. It explains concepts like passaging cells to maintain and expand cultures. The document also discusses cryopreservation to store cells long-term in liquid nitrogen. Common cell lines used in research are also mentioned like HeLa and MCF-7 cells. Contamination in cell culture can occur from bacteria, fungi or mycoplasma and affect cell growth. Strict aseptic
The document discusses different types of cell culture used in bioreactors. It describes organ culture, tissue culture, and cell culture. Cell culture involves dispersing tissue enzymatically into a cell suspension that can be grown as a monolayer or in suspension. Continuous cell lines can be propagated indefinitely and have gained immortality through transformation. Bioreactors must provide a well-controlled environment for cell culture and can operate in batch, fed-batch or perfusion modes. Common bioreactor designs include stirred tank, airlift and wave bioreactors.
Cell culture involves removing cells from an animal or plant and growing them in an artificial environment that provides nutrients for growth. Key developments included the use of antibiotics to reduce contamination, enzymes like trypsin to detach adherent cells, and chemically defined media. Cell culture is used for modeling biology, toxicity testing, cancer research, virology, genetic engineering, and producing therapeutic proteins. Proper conditions like temperature, substrate, and media composition are required to keep cells "happy" and growing. Aseptic technique and containment are important to prevent contamination.
1. The document discusses stem cells from umbilical cord blood and their potential uses and advantages over other stem cell sources. It notes that umbilical cord blood stem cells are easy and painless to obtain, pose no ethical issues, and have lower risks of transplant rejection.
2. Potential uses of umbilical cord blood stem cells discussed include treatment of conditions like cerebral palsy, diabetes, heart disease, and organ failure. However, the likelihood of any individual needing treatment is relatively low.
3. The document provides information on storing umbilical cord blood, the relationship between stem cell quantity and treatment effectiveness, and HLA matching in transplants. It notes cord blood stem cells have a lower risk of
This document discusses cell culture environments. It explains that the culture medium is the most important component as it provides nutrients, growth factors, hormones, and regulates pH and osmotic pressure. There are three basic types of media: basal media containing essential components; reduced-serum media with less serum; and serum-free media without serum and using growth factors instead. The document also discusses factors like pH, CO2 levels, and temperature that affect the culture environment and lists optimal levels for different cell lines.
This document discusses various methods for testing the mutagenicity of chemicals, including both prokaryotic and eukaryotic cell systems. It describes the Ames test which uses Salmonella bacteria to identify mutagens, as well as other prokaryotic methods like the host-mediated assay and coliform assay. Eukaryotic methods discussed include the Saccharomyces forward mutation assay, mammalian cell tests, and in vivo assays like the micronucleus test and dominant lethal assay. The document provides details on the procedures and principles of many of these important mutagenicity testing methods.
A wonderful and interesting presentation on Multiple Sclerosis! It includes videos, pictures and great insight into the possible cure for MS. I truly hope whoever downloads it enjoys it as much as I do. Blessings!
1. Multiple sclerosis is a disease of the central nervous system where the protective myelin sheath around the axons is damaged, leading to scarring and demyelination.
2. It commonly affects people between the ages of 20-40 and has a higher prevalence in northern European populations and temperate climates.
3. Symptoms vary widely and can include changes in sensation, vision problems, weakness, and balance issues. Diagnosis involves MRI imaging and ruling out other potential causes through blood and spinal fluid tests.
The document provides information on principles of cell culture. It discusses the history of cell culture, beginning with Roux maintaining embryonic chick cells in 1885. It describes the typical equipment used in cell culture like laminar flow cabinets and incubators. The document outlines the different types of cell cultures like primary cultures derived directly from tissue and continuous cultures that can be serially passaged. It explains concepts like passaging cells to maintain and expand cultures. The document also discusses cryopreservation to store cells long-term in liquid nitrogen. Common cell lines used in research are also mentioned like HeLa and MCF-7 cells. Contamination in cell culture can occur from bacteria, fungi or mycoplasma and affect cell growth. Strict aseptic
The document discusses different types of cell culture used in bioreactors. It describes organ culture, tissue culture, and cell culture. Cell culture involves dispersing tissue enzymatically into a cell suspension that can be grown as a monolayer or in suspension. Continuous cell lines can be propagated indefinitely and have gained immortality through transformation. Bioreactors must provide a well-controlled environment for cell culture and can operate in batch, fed-batch or perfusion modes. Common bioreactor designs include stirred tank, airlift and wave bioreactors.
Cell culture involves removing cells from an animal or plant and growing them in an artificial environment that provides nutrients for growth. Key developments included the use of antibiotics to reduce contamination, enzymes like trypsin to detach adherent cells, and chemically defined media. Cell culture is used for modeling biology, toxicity testing, cancer research, virology, genetic engineering, and producing therapeutic proteins. Proper conditions like temperature, substrate, and media composition are required to keep cells "happy" and growing. Aseptic technique and containment are important to prevent contamination.
7. Kök hücrelerinin ,farkilaşma, embriyonun ve
fetusun gelişim sirasinda büyük stresin altinda
kalmalarin:
anabolizma azaltmasi,
mamkromolekulerin sentezlenmesi ve
hücrenin proliferasiyona nedeni olur.
8. hem koruyor hem tüm değişimleri düzeltiyor
Bu adaptif cevaplar kim?
Hsp, tirodoksin, homeostaz hücrelerin
reaksiyonu
Oct4 (oktamer 4 bağlayan transkripte faktörü)
Embriyo kök hücreler G1 evresinde kontrol
noktası
9.
10. Kök hücrelerde üçüncü koruma mekanizmasi
Ilk farklilaşma
Sonraki farklilaşmalar –baskilanma
11. Sorbitol ile deney
Stres enzimi stres ile aktive eden protein kinaz
(SAPK)
30 dakika da
4-24 saat te
Plasentada ve embryoda ;
“Telafi edici mekanizmalar” ve “öncelikli
farklılaşma”
12.
13. Düşük O2 ortamda
Oct4 oksijenin ortami
Hematopoietik kök hücreler ROS stresin altina
ataxia telangiectasia (ATM) serin/treoninkinaz
icin kodlayan geni ROS strese ugradiktan
sonda kok hucrelerde kendi yenilenme etkiye
sahip, nasıl?
14. . ER’de hatalı katlanmış veya katlanmamış
proteinlerin birikmesi ve ER yapı ve
fonksiyonunun bozulması durumunda ortaya
çıkan hücresel cevap ER stresi olarak
tanımlanmaktadır. ER stresinin tetiklendiği
hastalık grupları içerisinde nörodejeneratif
hastalıklardan amiyotrofik lateral skleroz,
Parkinson, Alzheimer ve Huntington,
iskemi/reperfüzyon hasarı olan hastalıklar,
metabolik hastalıklardan tip 2 diyabet ve obezite
ve bir kas hastalığı olan inklüzyon cisimcik
miyoziti (IBM) yer almaktadır
15. Embriyo döneminde ve plasenta da gelişen
hücrelerin zararlar
Erişkin kök hücrelere zararlar
Plasentanın sinirli gelişmesini, TOR sinyal
mekanizmalarin düşmesi ve apaptoz yüksek
ölçüde göstermektedir.
16.
17.
18.
19. FHL2 regulates hematopoietic stem cell functions under
stress conditions
(Yu Hou1, Xiaoqin Wang2, LiPing Li1,3, Rong Fan2, Ju Chen4,
Tongyu Zhu3, Wen Li1, Yanwen Jiang4,5, Nupur Mittal1,
Wenshu Wu1, David Peace1, and Zhijian Qian1,#
1Department of Medicine and Cancer Research Center,
University of Illinois Hospital and Health Sciences System,
Chicago, IL
2Department of Hematology, Fudan University Huashan
Hospital, Shanghai, China
3Fudan University ZhongShan Hospital, Shanghai, China
4Department of Medicine, University of California, San Diego,
La Jolla, CA; Institute for Computational Biomedicine, Weill
Cornell Medical College, New York, NY 10021, USA
5Department of Medicine, Weill Cornell Medical College, New
York, NY 10021, USA)
20. Adaptive and Pathogenic Responses to Stress by
Stem Cells during Development
Ladan Mansouri 1, Yufen Xie 2,3 and Daniel A Rappolee
3,4,*
1 Unit of Clinical Immunology and Allergy (L2:04),
Department of medicine, Karolinska University
Hospital Solna, 171 76 Stockholm, Sweden E-Mail:
ladan.mansouri@ki.se
2 CS Mott Center for Human Growth and Development,
Wayne State University School of Medicine,
Detroit, MA 48201, USA; E-Mail: yxie@med.wayne.edu
3 Department of Ob/Gyn, Reproductive Endocrinology
and Infertility, Wayne State University
School of Medicine, Detroit MI, 48201, USA
4 Program for Reproductive Sciences and Department of
Physiology, Hospital, Wayne State
University School of Medicine, Detroit MI, 48201, USA
21. FoxO3a regulates hematopoietic homeostasis through a
negative feedback pathway in conditions of stress or
aging
*Kana Miyamoto,1,2 *Takeshi Miyamoto,1-4 Reiko Kato,5
Akihiko Yoshimura,5 Noboru Motoyama,6 and Toshio
Suda1
1Department of Cell Differentiation, The Sakaguchi
Laboratory of Developmental Biology, 2Department of
Orthopedic Surgery, and 3Department of
Musculoskeletal Reconstruction and Regeneration
Surgery, Keio University School of Medicine, Shinjuku-ku;
4Precursory Research for Embryonic Science and
Technology, Japan Science and Technology Agency,
Kawaguchi; 5Department of Microbiology and
Immunology, Keio University School of Medicine,
Shinjuku-ku; and 6Department of Geriatric Medicine,
National Institute for Longevity Sciences, National Center
for Geriatrics and Gerontology, Obu, Japan
22. HGF, SDF-1, and MMP-9 are involved in
stress-induced human CD34+ stem cell
recruitment to the liver
Orit Kollet,1 Shoham Shivtiel,1 Yuan-Qing Chen,2
Jenny Suriawinata,3 Swan N. Thung,3
Mariana D. Dabeva,2 Joy Kahn,1 Asaf Spiegel,1
Ayelet Dar,1 Sarit Samira,1
Polina Goichberg,1 Alexander Kalinkovich,1
Fernando Arenzana-Seisdedos,3,4
Arnon Nagler,5 Izhar Hardan,5 Michel Revel,1,6
David A. Shafritz,2 and Tsvee Lapidot1
23. Stresin genel etkileri.....
Beni dinlediniz ve anladiniz umuduyla size
Tesekkur ederim ediyorum
Fatima Efendic
Editor's Notes
Epıgenetık modıfıkasızonlar mıjenja ekspresıju gena,ove promjene se prenose na kcerke stanica tako da tirodoxin trxg sudjeluje u odrzavanju sesiz genleri.
Oct4-POU5F nuzan za odrzavanje ekhipluripotencije
Prelazak iz stanicnog opstanka u organski i tako se prilagođava stresu suzbijanju diferencijacije ranih celija i podstice razvijanje novih drugih celija