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While examining the biology of HPV in class, you learned that this virus must be

ID: 216925 • Letter: W

Question

While examining the biology of HPV in class, you learned that this virus must be able to push differentiated cells back into the cell cycle in order for viral replication to occur. It turns out that poxviruses, such as vaccinia virus (VAcV), can productively infect a wide variety of cell types, including both undifferentiated and differentiated (i.,e., non-dividing) cells, in an equal manner. Additionally, poxviruses do not encode viral proteins that interact with Rb or p53 like HPV does. Given what you have learned about DNA viruses thus far in the course, explain the likely reason for these differences in the biology of HPV and VAcV. [7 pts.] 1.

Explanation / Answer

HPV

In HPV the types are divided into five genera based on their differnces in their DNA sequence with individual types

VIRUS STRUCTURE

It is an non -developed icosahedral structure mostly arround 50 - 60 n.m in diametre

Genomes comprise of double stranded circles and having 8000 base pairs

PREVALENCE

HPV detection in the absent apprent disease that found in MEN 50-80% and WOMEN in 11-12%

INCIDENCE

HPV mostly cervical disease isrecorded

Other than that hish risk recorded in oral cavity arround 5%

VACV

It is an sigle stranded that is an 70bp oligo neuceotide containing of an viral DNA

Unlikely it is not an double standard which cannot counter pair with another DNA

It include IFN in a TRL,DA-1 and RNA poll indepndent

In this STING,TBK -1 and IRF-3 are depndent