TLS Online TPP Program

#Question id: 15306


The transformation of a normal cell to a cancer cell is accompanied  by the loss of function of one or more tumor‐suppressor genes. High‐throughput sequencing studies have identified hundreds of genes that are implicated as tumor suppressors in humans. Some of the better characterized genes;

Gene

Primary tumor

Proposed function

i) APC

Colorectal

Binds β ‐catenin acting as transcription factor

ii) BRCA1

Breast

DNA repair

iii) MSH2, MLH1

Melanoma, pancreatic

p16: Cdk inhibitor

ARF: stabilizes p53

iv) E‐Cadherin

Breast, colon

Cell adhesion molecule

v) INK4a

Colorectal

Mismatch repair

vi) NF1

Neurofibromas

Activates GTPase of Ras

Choose incorrect matching regarding tumor‐suppressor genes/primary tumor/proposed functions;

#Unit 4. Cell Communication and Cell Signaling
  1.  iii and v

  2.  ii and iv
  3. i and v
  4. v and vi