Adult LacZ Expression Data for Mtfmt (MBFN)

Overview

Adult expression (≥ 6 weeks): The lacZ reporter gene within the targeting vector was used to determine the wholemount expression profile of the targeted gene. Mice were fixed by cardiac perfusion using 4% paraformaldehyde (PFA). Following dissection, the tissues to be stained were fixed an additional 30 min in 4% PFA before being rinsed in phosphate buffered saline and transferred to lacZ staining solution, containing 0.1% X-gal, for up to 48 hours. After an additional overnight post-staining fixation in 4% PFA, tissues were cleared with 50% glycerol then transferred to 70% glycerol for long-term storage.

Display Criteria

A tick-list of 41 tissues and organs was scored for the presence (green tick) or absence (red cross) of lacZ expression.

  • The term 'Ambiguous' was assigned when there was uncertainty as to the validity of the observed pattern e.g. staining may be very faint, background or an artefact due to trapping.
  • The term 'No Data' was assigned if the stained entity was not available to assess.

By default, up to 27 standard images may be taken using a Leica MZ16A microscope and Imagic software. These images were only collected when X-gal staining was present.

If information or images that you are interested in are not presented, please send details to MGPenquiries@sanger.ac.uk and, on a limited, first come first served basis, we will process your request.

Tick-List
Colony Name Mtfmt Knockout First EPD0042_1_A05 Mtfmt Knockout First EPD0042_1_A05
Genotype Mtfmt/+ Mtfmt/+
Gender Female Male
Age In Weeks 19.8 8.9
Adrenal Gland absent absent
Bone absent absent
Brain present present
Brown Adipose Tissue absent absent
Cartilage present present
Colon absent absent
Eye absent ambiguous
Gall Bladder No data absent
Heart absent absent
Kidney absent ambiguous
Large Intestine absent absent
Liver absent absent
Lung absent absent
Mammary Gland absent absent
Mesenteric Lymph Node absent ambiguous
Nasal Epithelia No data No data
Oesophagus absent absent
Oral Epithelia absent absent
Ovaries absent No data
Oviduct present No data
Pancreas absent absent
Parathyroid No data present
Peripheral Nervous System present present
Peyers Patch absent absent
Pituitary Gland No data present
Prostate No data absent
Skeletal Muscle absent absent
Skin absent present
Small Intestine absent absent
Spinal Cord present present
Spleen absent absent
Stomach absent absent
Testis No data present
Thymus absent ambiguous
Thyroid No data present
Trachea present present
Urinary System absent absent
Uterus absent No data
Vas Deferens No data absent
Vascular System absent absent
White Adipose Tissue absent absent
Images
  • Tissue: Brain
    Description: Longitudinal section
    Genotype: Heterozygous
  • Tissue: Brain
    Description: Lateral view
    Genotype: Heterozygous
  • Tissue: Eye
    Description: -
    Genotype: Heterozygous
  • Tissue: Kidney
    Description: -
    Genotype: Heterozygous
  • Tissue: Mesenteric lymph node
    Description: -
    Genotype: Heterozygous
  • Tissue: Rib cage
    Description: -
    Genotype: Heterozygous
  • Tissue: Skull
    Description: -
    Genotype: Heterozygous
  • Tissue: Tail
    Description: Cross-section
    Genotype: Heterozygous
  • Tissue: Testis
    Description: -
    Genotype: Heterozygous
  • Tissue: Trachea and thyroid
    Description: -
    Genotype: Heterozygous
Background LacZ Staining in Adult

The adult wholemount LacZ expression protocol has been refined to minimize background staining however, it can still occur. We have systematically documented the sites and intensities of this background stain in male and female wildtype C57BL/6 (C57BL/6J-Tyr<c-Brd>; C57BL/6NTac/Den) mice. The major locations where background staining may be observed are:

  • Nasal cavity
  • Thyroid gland
  • Glandular stomach
  • Kidney
  • Male genitals

Additional background staining is observed occasionally in:

  • Rib cage
  • Thymus
  • Mesenteric lymph nodes
  • Ovaries

Examples of the pattern and level of background stain are presented below.

  • Tissue: Nasal cavity
    Description: Longitudinal section
    Genotype: Wildtype
  • Tissue: Nasal cavity
    Description: -
    Genotype: Wildtype
  • Tissue: Trachea and thyroid
    Description: -
    Genotype: Wildtype
  • Tissue: Trachea and thyroid
    Description: -
    Genotype: Wildtype
  • Tissue: Stomach
    Description: -
    Genotype: Wildtype
  • Tissue: Stomach
    Description: -
    Genotype: Wildtype
  • Tissue: Kidney
    Description: Longitudinal section
    Genotype: Wildtype
  • Tissue: Kidney
    Description: -
    Genotype: Wildtype
  • Tissue: Urogenital system
    Description: -
    Genotype: Wildtype
  • Tissue: Testis
    Description: -
    Genotype: Wildtype
  • Tissue: Rib cage
    Description: -
    Genotype: Wildtype
  • Tissue: Thymus
    Description: -
    Genotype: Wildtype
  • Tissue: Mesenteric lymph node
    Description: -
    Genotype: Wildtype
  • Tissue: Ovary and Uterus
    Description: -
    Genotype: Wildtype
  • Tissue: Ovary and Uterus
    Description: -
    Genotype: Wildtype