Inherited disorders can be caused by genetic abnormalities passed down from parents or spontaneous genetic mutations. Diagnosis techniques include DNA probes tagged with radioactive isotopes to detect mutations, restriction enzyme analysis to study DNA fragments, and analysis of disease-related genes using PCR and fluorescent in situ hybridization. Examples provided are diagnosis of sickle cell anemia, cystic fibrosis, tuberculosis, cancer, and Down syndrome.
in this presentation, what are the steps and strategies involved the gene cloning and i was focused only on the 1st two steps of gene cloning.they are generation of foreign DNA molecules and selection of suitable vectors.
in this presentation, what are the steps and strategies involved the gene cloning and i was focused only on the 1st two steps of gene cloning.they are generation of foreign DNA molecules and selection of suitable vectors.
Probes are used for hybridization purposes. different types of probes can be used on the basis of what we want to hybridize. May be Radioactive or Non-Radioactive.
In situ Hybridization (ISH) and Fluorescence in Situ Hybridization (FISH) Creative-Diagnostics
In situ Hybridization (ISH) and Fluorescence in Situ Hybridization (FISH) by Creative Diagnostics, learn more http://www.creative-diagnostics.com/in-situ-hybridization-and-fluorescence-in-situ-hybridization.htm
Probes are used for hybridization purposes. different types of probes can be used on the basis of what we want to hybridize. May be Radioactive or Non-Radioactive.
In situ Hybridization (ISH) and Fluorescence in Situ Hybridization (FISH) Creative-Diagnostics
In situ Hybridization (ISH) and Fluorescence in Situ Hybridization (FISH) by Creative Diagnostics, learn more http://www.creative-diagnostics.com/in-situ-hybridization-and-fluorescence-in-situ-hybridization.htm
It contains introduction on basic molecular biology followed by detailed description on discovery , mechanism of oncogene activation, their effect on tumerogenesis , name of important oncogenes , their detection and targeted therapies against oncogenes in treating cancer
It is about the mutagens that causes the genetic disorders. Here I enlist the different responsible proteins whose deficiency or excessive amount cause genetic disorders.
Southern blotting is a laboratory technique used to detect specific DNA sequences in DNA samples. It involves several steps:
Restriction Digestion: DNA from a biological sample (such as blood or tissue) is broken into smaller fragments using restriction enzymes, which cut the DNA at specific sequences.
Electrophoresis: The DNA fragments are separated based on their molecular weights using gel electrophoresis. This process allows smaller fragments to move faster than larger fragments.
Transfer to Membrane: The DNA fragments are transferred from the gel onto a solid membrane, typically a positively charged nylon membrane, using capillary action.
Hybridization: The membrane is then exposed to a DNA probe labeled with a radioactive, fluorescent, or chemical tag. The probe is designed to be complementary to the target DNA sequence, allowing it to bind to the specific DNA fragment on the membrane.
Detection: The bound probe is detected using methods such as X-ray film, phosphorimaging, or chemiluminescent substrates, depending on the type of label used.
Southern blotting is used in various applications, including:
Identifying specific DNA sequences in DNA samples
Studying gene rearrangements and mutations
Analyzing viral and bacterial infections
Forensic analysis and personal identification
Gene mapping and restriction enzyme mapping
Identifying methylated sites in genes.
This technique is named after its inventor, Dr. Edwin Southern, who first published it in 1975.
This is all about southern blotting
Cancer Epigenetics: Concepts, Challenges and PromisesMrinmoy Pal
The presentation highlights how recent investigations have shown extensive reprogramming of almost every component of the epigenetic machinery in cancer leading to the emergence of the promising field of epigenetic therapy.
This presentation explores a brief idea about the structural and functional attributes of nucleotides, the structure and function of genetic materials along with the impact of UV rays and pH upon them.
What is greenhouse gasses and how many gasses are there to affect the Earth.moosaasad1975
What are greenhouse gasses how they affect the earth and its environment what is the future of the environment and earth how the weather and the climate effects.
Salas, V. (2024) "John of St. Thomas (Poinsot) on the Science of Sacred Theol...Studia Poinsotiana
I Introduction
II Subalternation and Theology
III Theology and Dogmatic Declarations
IV The Mixed Principles of Theology
V Virtual Revelation: The Unity of Theology
VI Theology as a Natural Science
VII Theology’s Certitude
VIII Conclusion
Notes
Bibliography
All the contents are fully attributable to the author, Doctor Victor Salas. Should you wish to get this text republished, get in touch with the author or the editorial committee of the Studia Poinsotiana. Insofar as possible, we will be happy to broker your contact.
Nutraceutical market, scope and growth: Herbal drug technologyLokesh Patil
As consumer awareness of health and wellness rises, the nutraceutical market—which includes goods like functional meals, drinks, and dietary supplements that provide health advantages beyond basic nutrition—is growing significantly. As healthcare expenses rise, the population ages, and people want natural and preventative health solutions more and more, this industry is increasing quickly. Further driving market expansion are product formulation innovations and the use of cutting-edge technology for customized nutrition. With its worldwide reach, the nutraceutical industry is expected to keep growing and provide significant chances for research and investment in a number of categories, including vitamins, minerals, probiotics, and herbal supplements.
Slide 1: Title Slide
Extrachromosomal Inheritance
Slide 2: Introduction to Extrachromosomal Inheritance
Definition: Extrachromosomal inheritance refers to the transmission of genetic material that is not found within the nucleus.
Key Components: Involves genes located in mitochondria, chloroplasts, and plasmids.
Slide 3: Mitochondrial Inheritance
Mitochondria: Organelles responsible for energy production.
Mitochondrial DNA (mtDNA): Circular DNA molecule found in mitochondria.
Inheritance Pattern: Maternally inherited, meaning it is passed from mothers to all their offspring.
Diseases: Examples include Leber’s hereditary optic neuropathy (LHON) and mitochondrial myopathy.
Slide 4: Chloroplast Inheritance
Chloroplasts: Organelles responsible for photosynthesis in plants.
Chloroplast DNA (cpDNA): Circular DNA molecule found in chloroplasts.
Inheritance Pattern: Often maternally inherited in most plants, but can vary in some species.
Examples: Variegation in plants, where leaf color patterns are determined by chloroplast DNA.
Slide 5: Plasmid Inheritance
Plasmids: Small, circular DNA molecules found in bacteria and some eukaryotes.
Features: Can carry antibiotic resistance genes and can be transferred between cells through processes like conjugation.
Significance: Important in biotechnology for gene cloning and genetic engineering.
Slide 6: Mechanisms of Extrachromosomal Inheritance
Non-Mendelian Patterns: Do not follow Mendel’s laws of inheritance.
Cytoplasmic Segregation: During cell division, organelles like mitochondria and chloroplasts are randomly distributed to daughter cells.
Heteroplasmy: Presence of more than one type of organellar genome within a cell, leading to variation in expression.
Slide 7: Examples of Extrachromosomal Inheritance
Four O’clock Plant (Mirabilis jalapa): Shows variegated leaves due to different cpDNA in leaf cells.
Petite Mutants in Yeast: Result from mutations in mitochondrial DNA affecting respiration.
Slide 8: Importance of Extrachromosomal Inheritance
Evolution: Provides insight into the evolution of eukaryotic cells.
Medicine: Understanding mitochondrial inheritance helps in diagnosing and treating mitochondrial diseases.
Agriculture: Chloroplast inheritance can be used in plant breeding and genetic modification.
Slide 9: Recent Research and Advances
Gene Editing: Techniques like CRISPR-Cas9 are being used to edit mitochondrial and chloroplast DNA.
Therapies: Development of mitochondrial replacement therapy (MRT) for preventing mitochondrial diseases.
Slide 10: Conclusion
Summary: Extrachromosomal inheritance involves the transmission of genetic material outside the nucleus and plays a crucial role in genetics, medicine, and biotechnology.
Future Directions: Continued research and technological advancements hold promise for new treatments and applications.
Slide 11: Questions and Discussion
Invite Audience: Open the floor for any questions or further discussion on the topic.
2. INHERITED DISORDERS:
is a genetic problem caused by one or more
abnormalities in the genome
There are certain conditions in which genetic changes
are the main cause for this condition.
These are known as inherited disorders or genetic
disorder
it can also be caused due to mistakes in protein instructions
3. CAUSES:
• Inheritance from parents to off spring
• Alterations in the personal habits
• Environmental influence
• Genetic alterations in the gene
• Damage in the chromosome ie: change in number or structural
change of entire chromosome
• Mutations in the multiple genes
4. DNA PROBES
• It is a genetic probe and single stranded DNA molecule
• that can recognize and bind to target DNA
MECHANISM
• Based on the principle of denaturation and renaturation
• The double stranded DNA is subjected to physical and chemical
Eg: temperature >95c
PH < 10.5
•In favourable conditions they reunite and form double stranded DNA
5. RADIO ACTIVE DETECTION SYSTEM
• DNA probe is synthetically tagged with radioactive isotope usually
phosphorous 32 ie:P32
• The target DNA is purified and denatured and it is mixed with DNA
probes which is radioactively labelled
• The isotope labelled DNA specifically binds and hybridizes with the
target DNA
• The non – hybridized DNA is washed away
• The presence of radioactivity in the hybridized DNA can be
detected with the help of autoradiography
6. SICKLE CELL ANEMIA
• disease occurs mainly due to the single cell mutation in the beta
chain of globin
• In normal condition the DNA sequences is CCT GAG GAG
• But in disease condition the DNA sequences is altered CCT GTG GAG
•so the protein coded by the gene is altered as Glutamate
DIAGNOSIS:
•The single cell mutation can be detected using Restriction enzyme
Mst 11
• It is used to cut the DNA fragments in and around of beta globulin
gene
• it is followed by the electrophoresis of DNA fragments
7. •When a probe is attached to the segment of DNA hybridization will
occur only in case of damaged cell
CYSTIC FIBROSIS:
•characterized by the accumulation of dehydrated mucous in the
respiratory tract and lungs
•In normal condition the chloride ions are pushed out of the cells with
the help of protein CYSTIC FIBROSIS TRANSMEMBRANE PROTEIN
• affected person carriers of one mutation of the CFTR gene and Gene
Deletion Delta F 508
• CF patients has insufficient pancreatic function.
•Delta F 508 causes the loss of phenylalanine in a supposed CF
transmembrane regulation protein which affects a prospective ATP-
binding site and affects regular transport of chloride ions
8. DIAGNOSIS :
• Strong linkage disequilibrium has been shown between two
polymorphic loci
• defined by the DNA probes KM19 and XV-2c
TUBERCULOSIS :
• Caused by mycobacterium tuberculli
• generally affects the lungs but can also affect
other parts of the body.
• certain cases it doesn’t show no symptoms it
is latent tuberculosis
9. DIAGNOSIS:
• the luciferase reporter gene were constructed from phAE39 gene and
firefly luciferase gene was inserted into potent promoter of heat
shock protein 60
• Genetically engineered phage is added to culture medium of M.
tuberculosis
• Phage attaches to the bacterial cell penetrates and mycobacterium
tuberculosis chromosome which inserts leucin gene in
mycobacterium
• Enzyme luciferase is produced by the bacteria
• Luciferase ATP is added to the culture medium
• Light is detected by Leuminometer
•In the presence of adenosine triphosphate and luciferin fflux is able
to continuously express and generate an optical signal
10. CANCER:
• Cancer is the most common human genetic disease.
• The transition from a normal cell to a malignant cancer is
driven by changes to a cell's DNA which is known as
mutations.
• different types of cancer some of them includes
breast cancer, prostate cancer, skin cancer
DIAGNOSIS:
• presence of TKI-sensitizing somatic EGFR mutation in tumor tissue
strongly favors the diagnosis of lung cancer
11. • tumor markers for lung cancer , pancreatic cancer and breast cancer
is CA125,CEA
DOWNSYNDROME:
• is a genetic disorder caused by the presence of all or
part of a third copy of chromosome 21.
• I.Q level of children with down syndrome will be 50
• extra genetic material present in Down syndrome
results in overexpression of a portion of the 310 genes located on
chromosome 21and region is located at bands 21q22.1–q22.3
DIAGNOSIS:
• diagonised by fluorescent in situ hybdrization (FISH) and PCR
technique
12. • Primers for the analysis of chromosome 21 have been developed and
the D21S11 gene on chromosome 21 could be used for the target of
PCR
• lee et.al termed the homologous gene quantitative polymerase chain
reaction (HGQ-PCR) which uses one pair of primers.
• can directly identify the additional copy of chromosome 21 by
simultaneously amplifying two highly homologous genes of the
human liver-type phosphofructokinase located on chromosome 21
(PFKL-CH21) and the human muscle-type phosphofructokinase
located on chromosome 1 (PFKM-CH1).